1. Log into cPanel.
2. Under Databases, click phpMyAdmin.
3. Click on the WordPress database.
4. Click xxxx_users (xxxx is your database prefix).
5. Under user_login you will see the list of registered users. Under the user whose password you wish to reset, click Edit.
6. Under the user_pass column, clear the value on the far right and replace with what you would like the password to be.
Like this...
7. In the Function drop-down menu, select MD5.
8. At the bottom of the page, click GO.